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Reportable Business Segments (Segment Data) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) Segment | Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of Reportable Segments | Segment |  |  | 3 |
Net sales |  |  |  |
Net sales | $ 941,300,000 | $ 1,099,100,000 | $ 1,665,100,000 | $ 1,889,400,000
Segment profit (loss) |  |  |  |
Total segment profit | 153,000,000.0 | 202,300,000 | 190,600,000 | 300,300,000
Reconciliation to Operating income: |  |  |  |
Loss on sale of business | 0 | 400,000 | 0 | 8,800,000
Net Loss(gain) from natural disaster | 1,000,000.0 | (5,900,000) | 2,700,000 | (12,800,000)
Loss (gain) from natural disaster, net of insurance recoveries | (1,000,000.0) | 5,900,000 | (2,700,000) | 12,800,000
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss) | 7,000,000.0 | 2,600,000 | 6,100,000 | 3,900,000
Restructuring charges | 10,000,000.0 | (100,000) | 10,500,000 | 400,000
Operating income | 136,000,000.0 | 213,800,000 | 172,300,000 | 308,500,000
Partial advance of insurance recoveries related to lost profits | 0 | (8,000,000.0) | 0 | (8,000,000.0)
Special inventory write down | (1,000,000.0) | (500,000) | (1,000,000.0) | (500,000)
Residential Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 644,800,000 | 689,100,000 | 1,086,900,000 | 1,154,600,000
Segment profit (loss) |  |  |  |
Total segment profit | 127,300,000 | 153,400,000 | 159,800,000 | 240,100,000
Residential Heating & Cooling [Member] | Sales Channel, Directly to Consumer [Member] |  |  |  |
Reconciliation to Operating income: |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0.76 | 0.75 | 0.75 | 0.74
Commercial Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 188,300,000 | 261,300,000 | 366,700,000 | 434,700,000
Segment profit (loss) |  |  |  |
Total segment profit | 35,600,000 | 53,900,000 | 54,300,000 | 68,900,000
Commercial Heating & Cooling [Member] | Equipment Sales [Member] |  |  |  |
Reconciliation to Operating income: |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0.86 | 0.87 | 0.85 | 0.85
Refrigeration [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 108,200,000 | 148,700,000 | 211,500,000 | 300,100,000
Segment profit (loss) |  |  |  |
Total segment profit | 8,900,000 | 19,100,000 | 9,600,000 | 27,500,000
Corporate & Other [Member] |  |  |  |
Segment profit (loss) |  |  |  |
Total segment profit | $ 18,800,000 | $ 24,100,000 | $ 33,100,000 | $ 36,200,000

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